Author:Mbanjwa, MBDate:Oct 2012Droplet-based microfluidic technology has, in recent years, found numerous applications in biology, chemistry, materials synthesis and process engineering applications. Alongside experimental work, numerical tools, such as computational fluid ...Read more
Author:Jansen van Rensburg, Gerhardus J; Bogaers, Alfred EJDate:Oct 2018During the optimal design and simulation of machining or forming processes, detailed simulation of structural response is typically required for use in Finite Element Analysis (FEA). In this study, the bulk temperature and rate dependent ...Read more
Author:Van den Heever, SC; D'Abreton, PC; Tyson, PDDate:Aug 1997Tropical-temperate troughs and their associated cloud bands have been modelled over southern Africa using the Regional Atmospheric Modelling System (RAMS). The correspondence between simulated fields and observational data for both the dry, ...Read more
Author:Haarhoff, LJ; Kok, S; Wilke, DNDate:Apr 2013Kriging is used extensively as a metamodel in multidisciplinary design optimization. The correlation matrix used in Kriging metamodeling frequently becomes ill-conditioned. Therefore different numerical methods used to solve the Kriging ...Read more
Author:Lysko, Albert A; Johnson, DDate:Jul 2008The present layout of the indoor wireless mesh network test-bed build at the Meraka Institute is introduced. This is followed by a description of a numerical electromagnetic model for the complete test-bed, including the coupling and diffraction ...Read more
Author:Long, Craig S; Loveday, Philip W; Ramatlo, Dineo AM; Andhavarapu, EVDate:Sep 2018Numerical verification of a method to simulate piezoelectric transducers exciting infinite elastic waveguides is presented. The method, referred to as SAFE-3D, combines a 3D finite element (FE) model of a transducer with a 2D semi-analytical ...Read more
Author:Scogings, PF; Hjalten, J; Skarpe, C; Hattas, D; Zobolo, A; Dziba, L; Rooke, TDate:Jan 2014Carbon-based secondary metabolites (CBSMs) such as tannins are assumed to function as plant defences against herbivores. CBSMs are thought to be inversely related to growth rate and nutrient concentrations because a physiological trade-off ...Read more
Author:Lemley, DA; Taljaard, Susan; Adams, JB; Strydom, NDate:Oct 2014This study provides an overview of the nutrient status of river inflow into the estuaries within the Gouritz Water Management Area (WMA) of South Africa. Riverine inputs are a major source of macronutrients to estuaries and the adjacent coastal ...Read more
Author:Wehmeyer, ASDate:17 Dec 1966The nutrient content of 9 species of wild fruits growing in the Transvaal was determined in the laboratory were the research was conducted. In order to simplify the removal of the flesh from the stones, the fruits were in most cases freeze-dried ...Read more
Author:Adams, JB; Taljaard, Susan; Van Niekerk, Lara; Lemley, DADate:Feb 2020Nutrient pollution in South African estuaries is described using a Driver-Pressure-State-Impact-Response framework. The root cause (‘driver’) of deteriorating water quality is rapid population growth that leads to increasing inputs from ...Read more
Author:Dias, B; Wolmarans, P; Laubscher, JA; Schutte, PCDate:Dec 2003Housing and nutrition have been used as indicators of poverty, and as common targets for intervention to improve public health and reduce health inequalities (Gauldie 1974). The relationship between health, nutrition and housing is well ...Read more
Author:Symes, CT; McKechnie, AE; Nicolson, SW; Woodborne, SMDate:2010The winter-flowering succulent Aloe marlothii provides nectar for many opportunisticavian nectarivores in southern African savannas. We assessed the importance of A. marlothii nectar sugar for opportunistic nectarivores by analysing temporal ...Read more
Author:Dreyer, JJ; Wehmeyer, ASDate:Jan 1982The use of the caterpillar of the Mopanie moth (Conimbrasia belina) as a food by the Pedi nation has been described in detail by Quin, who also recorded data on the average weight and moisture, protein and fat contents of the fresh caterpillars. ...Read more
Author:Huntley, BJDate:Mar 1978A description of the objectives, organization and research programme of the Savanna Ecosystem Project being undertaken at Nylsvley in the northern Transvaal is presented. The project is a cooperative multi-disciplinary study of the structure ...Read more
Author:Wall, K; Bhagwan, J; Ive, O; Kirwan, FDate:Sep 2012South African research finds that social franchising partnerships could address many challenges in the operation and maintenance of water services infrastructure. Franchising trains those on-site, and also provides backup off-site skills. ...Read more
Author:Gee, EDate:Aug 1976Estimates for the South African merino wool clip of the within bale and between bale variations of yields and of diameter have been made from cores taken by Model T coring machines for wools sold through three ports.Read more
Author:Gee, E; Robie, GJDate:Nov 1973Sixteen types of wool (Spinners, Top makers, etc.) represented by 264 bales were cored and measured for clean wool content and fibre diameter.Read more
Author:Govender, Avashna; De Wet, FebeDate:Dec 2016Building synthetic child voices is considered a difficult task due to the challenges associated with data collection. As a result, speaker adaptation in conjunction with Hidden Markov Model (HMM)-based synthesis has become prevalent in this ...Read more
Author:Elkaseh, AAO; Srinivasu, VV; Perold, WJDate:2009Using an Atomic Force Microscope (AFM), micron size planar constriction type junctions was successfully ploughed on YBa2Cu3O7-x thin films. The 100 nanometer (nm) thin films are deposited on MgO substrates by an Inverted Cylindrical Magnetron ...Read more